Grants per year
Personal profile
Research Interests
Professor Lueptow's current research interests are in three areas: 1) Modeling, simulation, and experiments on the segregation and mixing of bi-and poly-disperse granular materials, both spherical and non-spherical, in quasi-2D and fully 3D geometries; 2) A dynamical systems approach to mixing by "cutting and shuffling," particularly as applied to granular materials; 3) Molecular level simulation of transport processes in polymeric nanofiltration and reverse osmosis membranes.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Mechanical Engineering, ScD, Massachusetts Institute of Technology
… → 1986
Mechanical Engineering, SM, Massachusetts Institute of Technology
… → 1980
Engineering, BS, Michigan Technological University
… → 1978
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Collaborations and top research areas from the last five years
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GOALI: Segregation and Mixing of Cohesive Particles
Lueptow, R. M. (PD/PI) & Umbanhowar, P. (Co-PD/PI)
9/1/24 → 8/31/27
Project: Research project
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GOALI: Fine Particle De-Mixing in Granular Flows
Lueptow, R. M. (PD/PI), Lueptow, R. M. (PD/PI), Lueptow, R. M. (PD/PI), Umbanhowar, P. (Co-PD/PI), Umbanhowar, P. (Co-PD/PI) & Umbanhowar, P. (Co-PD/PI)
6/1/22 → 5/31/26
Project: Research project
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GOALI: Charge Interactions in Transport of Mixed Solutes in Nanofiltration Membranes
Lueptow, R. M. (PD/PI), Lueptow, R. M. (PD/PI), Keten, S. (Co-PD/PI) & Keten, S. (Co-PD/PI)
7/1/19 → 6/30/25
Project: Research project
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GOALI: Flow driven segregation at the particle level
Lueptow, R. M. (PD/PI) & Umbanhowar, P. (Co-PD/PI)
10/1/19 → 9/30/24
Project: Research project
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UNS: Controlling mixing and segregation of granular media using unsteady flows
Umbanhowar, P. (PD/PI) & Lueptow, R. M. (Co-PD/PI)
7/1/15 → 6/30/20
Project: Research project
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Improved velocity-Verlet algorithm for the discrete element method
Vyas, D. R., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P. B., May 2025, In: Computer Physics Communications. 310, 109524.Research output: Contribution to journal › Article › peer-review
Open Access -
Lift and drag forces on a moving intruder in granular shear flow
He, H., Zhang, Q., Ottino, J. M., Umbanhowar, P. B. & Lueptow, R. M., Mar 25 2025, In: Journal of fluid Mechanics. 1008, A5.Research output: Contribution to journal › Article › peer-review
Open Access -
Erratum: Particle capture in a model chaotic flow [Phys. Rev. E 104, 064203 (2021)
Wang, M., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P. B., Sep 1 2024, In: Physical Review E. 110, 3-2, p. 39902 1 p.Research output: Contribution to journal › Comment/debate › peer-review
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General model for segregation forces in flowing granular mixtures
Duan, Y., Jing, L., Umbanhowar, P. B., Ottino, J. M. & Lueptow, R. M., Jul 29 2024, In: Journal of fluid Mechanics. 989, A17.Research output: Contribution to journal › Article › peer-review
Open Access -
Impacts of packed bed polydispersity and deformation on fine particle transport
Vyas, D. R., Gao, S., Umbanhowar, P. B., Ottino, J. M. & Lueptow, R. M., Sep 2024, In: AIChE Journal. 70, 9, e18499.Research output: Contribution to journal › Article › peer-review
Open Access2 Scopus citations
Datasets
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Supplementary material from "Continuum modelling of segregating tridisperse granular chute flow"
Deng, Z. (Contributor), Umbanhowar, P. B. (Creator), Ottino, J. M. (Creator) & Lueptow, R. M. (Creator), figshare, 2018
DOI: 10.6084/m9.figshare.c.4028617, https://figshare.com/collections/Supplementary_material_from_Continuum_modelling_of_segregating_tridisperse_granular_chute_flow_/4028617
Dataset